提出了一种新的多通道散斑照相术,通过旋转光楔实现多通道散斑图记录。该方法不仅能在一张记录介质上记录物体动变形一些状态的多通道散班图,且用全场滤波分析时,能方便地同时给出所有通道的物变形信息,得到清晰的,高衬比的干涉条纹图。文中还给出了物体动变形及板弯曲等实测结果及分析。结果表明,理论分析与实验结果相一致。

A new mutiplex speckle photography is given which uses a rotating prism to record multiple specklegram. The advantage of this method is that the multiple specklegram of some dynamic process of an object can be recorded on a single holofilm. In the whole field filtration, the information of deformation in all channels can be easily obtained and the images obained are quite clear. Test results and analysis of the recorded dynamic deformation of a moving object and plate bended deformation are presented. It is shown that the theoretical analysis agree with results from test.